US2558869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering waste cooking oils
Assignee: Individual
•
Filing: 1948-07-17
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Granted: 1951-07-03
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Expires: 1968-07-17
Abstract
No abstract record available.
Inventors
- 👤 William L Mccolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:02
CPC Classifications
C; C11; C11B; C11B13/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A METHOD OF RECLAIMING COOKING OIL FROM WASTE FRIED POTATO PRODUCTS COMPRISING PASSING HOT WATER THROUGH A MASS OF FRIED POTATOES TO SOFTEN AND CARRY OFF OIL FROM THE POTATOES, DELIVERING INTERMINGLED OIL AND WATER TO A SETTLING ZONE AND SEPARATING THE OIL FROM THE WATER BY FLOTATION, DELIVERING THE SEPARATED OIL AND ANY RESIDUAL WATER THEREIN TO A MIXING ZONE, HEATING AND AGITATING THE OIL AT A TEMPERATURE OF 220*230* F. TO DRIVE OFF ANY REMAINING MOISTURE, MIXING FILTERING CLAY WITH THE HEATED OIL DURING THE AGITATION, AND PASSING THE HEATED OIL THROUGH A FILTER AND REMOVING THE CLARIFIED OIL FROM THE FILTER CAKE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |